/ig zerr"sheuhn/ , n.
1. vigorous action or effort: physical and mental exertion.
2. an effort: a great exertion to help others.
3. exercise, as of power or faculties.
4. an instance of this.
[ 1660-70; EXERT + -ION ]
Syn. 1. endeavor, struggle, attempt, activity, strain. See effort .